George Thompson (1823-c1873), who also wrote under the pseudonym Greenhorn, was the most prolific author of city mysteries. He was the editor of The Broadway Belle (1855-1858), a sporting paper. Thompson wrote magazine serials, pamphlets, and novels (perhaps as many as sixty). His works include: City Crimes; or, Life in New York and Boston (1849), Venus in Boston (1849), Jack Harold (1850) and Locket: A Romance of New York (1855).